Abstract It was proposed photonic nanostructures with magnetooptical and plasmonic properties that can be effectively used for optical sensors and nanophotonic devices. Optical, magnetooptical and functional properties of photonic crystals with magnetooptical structural elements in the form of films of bismuth-substituted iron garnets and gold plasmonic layer were considered. Simultaneous excitation of optical Tamm states (OTS) and Fabry-Perot resonance or OTS, Fabry-Perot resonance and surface plasmon-polaritons in proposed nanostructures was considered.